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Mathematics 8 Online
OpenStudy (anonymous):

Is this right;

OpenStudy (anonymous):

OpenStudy (anonymous):

b is correct. for a it's asking where its undefined. meaning when does the denominator equal zero. so factor x^2+3x-10, and set the value to zero to solve.

OpenStudy (anonymous):

oh it is (x-5)(x-2)

OpenStudy (anonymous):

(x+5)(x-2) now solve individually

OpenStudy (sirm3d):

your answer is right, @malibugranprix2000 . One vertical asymptote and one discontinuity, and no horizontal asymptote. i'll assume that you have solution to your answers.

OpenStudy (anonymous):

oh btw the bottom one is hidden it is what is the oblique asymptote? I believe the answer is -5

OpenStudy (anonymous):

for that question you're gonna have to do polynomial division or synthetic division

OpenStudy (anonymous):

I meant for the first one is -5 right?

OpenStudy (sirm3d):

the oblique asymptote is the line y = x-3. Divide the numerator by the denominator by long division, the quotient is your "oblique" asymptote

OpenStudy (anonymous):

x=-5,2 are the vertical asy. x-2=0 is 2

OpenStudy (sirm3d):

\[\large \frac{ x^3-8 }{ x^2+3x-10 }=(x-3)+\frac{ 19 }{ x+5 }, x \neq 2\]

OpenStudy (anonymous):

i assumed he hasn't learned discontinuity yet. but yea x=5 would be it

OpenStudy (sirm3d):

x=2 is not a vertical asymptote, since \[\frac{ x^3-8 }{ x^2+3x-10 }=\frac{ (x-2)(x^2+2x+4) }{ (x-2)(x+5) }=\frac{ x^2+2x+4 }{ x+5 };x \neq 2\]

OpenStudy (anonymous):

Yea x=2 gets cancled right?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

oh ok so its not -5 its 5?

OpenStudy (anonymous):

that was a mistake when i posted the reply i forgot to put in the neg. sign on 5

OpenStudy (anonymous):

oh ok no problem. thanks for the help @technofable and @sirm3d

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